{"book":"adl0131","page":251,"text":"کتاب\n۲۴۰\nمساحت\n\nمساح از نقطه الف بطرف نقطهٔ ی پیمایش شروع میکند\nخط الف ب ۳۰۰ کڑی و برنقطهٔ ب یک عمود بَ بَ بطرف دست\nچپ ۲۳۰ کڑی است والف س ۲۷۵ کڑی و بر نقطه س یک عمو\nسَ سَ بطرف دست راست ۲۵۰ کڑی است والف دَ ۵۰،\nکڑی است و بر نقطه دَ یک عمود دَ وَ بطرف دست چپ ۲۶۰\nکڑی است والف ی ۲۵۰ کڑی درطول است پس رقبه ہاے\nقطعات زمین مذکور در پیمانه های مربع کڑی حسب ذیل اند-\nرقبه مثلث الف بَ بَ = ۱/۲ * ۳۰۰ * ۲۳۰ = ۳۴۵۰۰\nرقبه ذوزنقه بَ دَ وَ ب = ۱/۲ * ۴۹۰ * ۴۵۰ = ۱۱۰۲۵۰\nرقبه مثلث دَی وَ = ۱/۲ * ۳۷۵ * ۲۶۰ = ۴۸۷۵۰\nرقبه مثلث الف ی سَ = ۱/۲ * ۱۱۲۵ * ۲۵۰ = ۱۴۰۶۲۵\nحاصل جمع کل رقبه های مذکور ۳۳۴۱۲۵\nپس کل رقبه زمین مذکور ۳۳۴۱۲۵ مربع کڑی یا ۳۳۴۱۲۵ کڑی\n\nپروژه","chars":636,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00251.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/251","canvas":"https://afghanpress.org/iiif/adl0131/canvas/251","source":"https://afghanistandl.nyu.edu/books/adl0131/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0131_download.pdf","rights":{"image":{"statement":"Public domain. NYU states: \"All works presented on this website are, unless otherwise indicated, in the public domain. The images available on this website may be freely reproduced, distributed and transmitted by anyone for any purpose, commercial or non-commercial.\"","uri":"http://rightsstatements.org/vocab/NoC-US/1.0/","holder":"New York University Libraries","source":"https://afghanistandl.nyu.edu/about.html","delivery":"Images are served from a copy mirrored by this project, not from NYU's servers, under the reproduction terms above.","endorsement":"This is an independent project. It is not affiliated with, endorsed by, or reviewed by New York University."},"text":{"statement":"Machine-generated transcription, dedicated to the public domain under CC0 1.0. No warranty of accuracy: see the provenance block on every page.","uri":"https://creativecommons.org/publicdomain/zero/1.0/","holder":"Steps Ventures"}},"provenance":{"text_produced_by":"gemini-3.1-pro-preview","thinking_level":"low","read_completed":"2026-08-09","per_page_confidence":null,"per_page_confidence_note":"Not recorded during the corpus run. No calibrated per-page score exists, and none is estimated here.","human_reviewed":false,"accuracy_context":"Roughly two thirds of characters agree with a modern printed edition of the same text. Much of the disagreement is editorial, not misreading. Treat the transcription as a finding aid and read the page image before quoting.","primary_source":"The page image. The text is an index into it."}}